How to automatically DM a link when someone comments a keyword (2026)
September 3, 2026 · 8 min read
To automatically DM someone a link when they comment a keyword, you need one of three things: a keyword tool like BetterSocials (setup takes about a minute: write the keyword, write the message with your link, done, from $29 a month flat), Meta Business Suite's free built-in automation (up to 5 keywords, one template reply, Instagram and Facebook only), or a bot builder like ManyChat (from $14 a month on annual billing, priced by active contacts). Here is how each route works, step by step, and which one fits which creator.
Disclosure
We build BetterSocials, the first route below. The free Meta route is real and this page walks you through it too, because if a bare keyword DM is all you need, you should not pay anyone for it.
Why "comment X and I'll DM you the link" works
Asking people to comment a keyword does two jobs at once. The comments push your post to more people, because comment count is a signal every platform rewards. And the DM puts your link in a private thread where the person actually asked for it, which converts far better than hoping they find the link in your bio. That is why this one mechanic has become the standard way creators sell from organic content. The deeper playbook is in turning Instagram comments into customers.
Route 1: BetterSocials, one keyword and one message
Here is the whole setup.
The public reply matters more than it looks. A comment thread full of answered comments keeps the post moving in the algorithm and shows everyone else the keyword works. And because replies are drafted from how you have replied before, a hundred of them do not read like a bot posted a hundred times.
BetterSocials is $29 a month flat with unlimited contacts, founding members lock $19 for life while the first 100 spots last, and the comment-to-DM page shows it running.
Route 2: Meta Business Suite, free and bare
Meta builds a free version of this into Business Suite for Instagram and Facebook. Setup happens on desktop: open Business Suite, go to Inbox, then Automations, choose the comment-to-message automation, add your keywords, and write the reply message.
The limits, from Meta's own help pages (checked July 2026):
- Up to 5 keywords per automation, and they are case-sensitive, so GUIDE and guide are different keywords.
- One template reply for everyone. No AI, no voice, no variation.
- Instagram and Facebook only, with no inbox, no analytics, and nothing on YouTube.
If you post occasionally and just want a link delivered, use this and pay nobody. We wrote the full honest boundary in Instagram's free comment-to-DM vs ManyChat. You will feel the ceiling the first week a post takes off: five case-sensitive keywords, one canned reply, and no record of who asked.
Route 3: ManyChat, the builder version
In ManyChat you build the same mechanic as an automation in its flow builder: create a trigger for comments containing your keyword, attach a message node with your link, publish it. It works, it can branch into follow-ups and funnels, and it is priced by active contacts, $14 a month on annual billing for 250 contacts, $17 month to month, with the free plan covering 25 contacts (manychat.com/pricing, checked July 2026).
Choose it when you want the link DM to be step one of a longer automated funnel. If the link DM is the whole job, the builder and the contact meter are overhead. The no-builder version of this argument is at comment-to-DM without chatbot flows.
The part everyone skips: will the DM actually arrive?
Two honest mechanics affect delivery on Instagram, whatever tool you use. First, DMs to people who do not follow you can land in their message requests folder rather than their main inbox, so some percentage of your links get seen late or never. Second, platforms rate-limit how fast any account can send, and a good tool respects those limits instead of blasting.
You cannot eliminate either. You can pick a tool that paces sends within platform limits and posts the public reply, so even someone who misses the DM sees the answer under their comment. If safety is the thing holding you back, read is Instagram DM automation safe for the full picture.
The three routes, side by side
| Route | Price | Setup | Reply quality | Channels |
|---|---|---|---|---|
| BetterSocials | $29/mo flat ($19 founding) | Keyword + message, ~1 minute | Public reply + DM, drafted in your voice | IG, FB, YouTube, Threads, LinkedIn |
| Meta Business Suite | Free | Desktop setup, 5 case-sensitive keywords | One template for everyone | IG, FB |
| ManyChat | From $14/mo annual, per contact | Build and publish an automation | Whatever you build | IG, FB, TikTok, WhatsApp + more |
Which route should you take?
Free tester: Meta's native automation. Funnel builder: ManyChat. Creator who wants the link delivered, the comment answered in their own voice, and every platform covered from one place: BetterSocials. That last one is most people reading this, which is why it is route one.
Frequently asked questions
How do I automatically send someone a link in their DMs when they comment a keyword?+
In BetterSocials: create a keyword like GUIDE, write the DM with your link once, and post. Every comment of that keyword gets a public reply in your voice plus the DM with the link, automatically. Setup takes about a minute and costs $29 a month flat, or $19 for life as a founding member.
Is there a free way to DM a link when someone comments?+
Yes. Meta Business Suite includes a free comment-to-message automation for Instagram and Facebook: up to 5 case-sensitive keywords that trigger one template reply. It has no AI, no unified inbox, no analytics, and nothing for YouTube, but for a bare keyword-to-link job it costs nothing.
Does comment-to-DM work on YouTube?+
No tool can send YouTube DMs because YouTube has no DM API. BetterSocials covers YouTube with a public keyword reply instead: your account answers the comment with your link, in your voice, so YouTube commenters still get the link without being ignored.
Why do some link DMs never arrive?+
Instagram routes DMs from accounts a person does not follow into their message requests folder, and platforms rate-limit send speed. No tool can bypass either. A public reply under the comment is the honest backstop: even someone who misses the DM sees the answer.
Do I need ManyChat to DM links from comments?+
No. ManyChat is the right tool when the link DM starts a longer automated funnel; it is priced by active contacts from $14 a month on annual billing ($17 month to month). For the simple job of keyword in, link out, with replies in your voice, a no-builder tool like BetterSocials does it in one step.